import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        try (Scanner scan = new Scanner(System.in)) {
            int L = scan.nextInt();
            int M = scan.nextInt();
            int N = scan.nextInt();

            int divN = N / 25;
            int remN = N % 25;
            int divM = (M+divN) / 4;
            int remM = (M+divN) % 4;
            int remL = (L+divM) % 10;
            
            int ans = remN + remM + remL;
            System.out.println(ans);
        }
    }
}